A US envoy has arrived in Tel Aviv for de-escalation talks as unrest between Israel and the Palestinians continues.
Hady Amr will take part in talks with Israeli, Palestinian and UN officials and reinforce what US diplomats said was the need for a “sustainable calm”.
An Israeli air strike on a refugee camp in the Gaza Strip killed 10 people on Saturday, while Palestinian militants fired rockets into Israel.
This week’s violence in Gaza and Israel is the worst since 2014.
At least 139 people have been killed in Gaza and eight in Israel since the fighting began on Monday, and sirens were sounding again on Saturday afternoon in Tel Aviv and elsewhere in Israel.
On Friday clashes spread to the West Bank, where a further 11 Palestinians were killed and hundreds were injured. Israeli forces used tear gas, rubber bullets and live fire, as Palestinians threw petrol bombs.
Saturday is the day when Palestinians commemorate what they call al-Nakba, the Catastrophe. It marks the displacement of hundreds of thousands of Palestinians who were forced or driven from their homes in the Arab-Israeli war which began the day after Israel’s declaration of independence in 1948.
The prospect for more trouble on Saturday is very real, BBC diplomatic correspondent Paul Adams says.
What is the latest on the fighting?
Thirteen people died in the Gaza Strip on Saturday, with 10 killed by an Israeli air strike at a refugee camp west of Gaza City, Palestinian health officials said.
A five-month-old baby is said to be the only survivor of that strike, found trapped in the rubble next to his dead mother. A number of people were also reported missing.
Akram Farouq, 36, dashed out of his home in Gaza along with his family after a neighbour told him they had received a call from an Israeli officer warning their building would be hit, Reuters news agency reports.
“We haven’t slept all night because of the explosions, and now I am out in the street with my wife and children, who are weeping and trembling,” he said.
An estimated 10,000 Palestinians have left their homes in Gaza since Monday because of the conflict, according to the UN.
Israeli officials reported about 200 rocket launches from Gaza overnight, with homes hit in the southern cities of Ashdod, Beersheba and Sderot.
In Beersheba, 19 people were taken to hospital after getting slightly hurt while running to shelters, and three suffered from shock, The Times of Israel reports.
In the afternoon, a rocket hit a street in Ramat Gan, a suburb of Tel Aviv, but there were no immediate reports of casualties
About 2,300 rockets have been fired from Gaza at Israel since Monday, with about 1,000 intercepted by missile defences and 380 falling short and dropping into Gaza itself, Israel’s military says.
Israel has said a ground offensive in Gaza is one option being considered but a decision has yet to be made.r Amr’s arrival comes ahead of a UN Security Council meeting on Sunday. The US embassy in Israel said the aim of his trip was to “reinforce the need to work toward a sustainable calm”.
US President Joe Biden’s administration has had to rapidly step up its game on the diplomatic front without a full team in place: there is not even a nominee yet for ambassador to Israel.
